Answer:
Hence, the longer dimension is approx 1.4 times longer than the shorter dimension.
Explanation:
The tiny area on a computer chip measures 2.3 mm by 1.7 mm.
This means that the shorter dimensions measure: 1.7 mm
and the longer dimension measures: 2.3 mm
Now, let the longer dimension be x times the shorter dimension.
i.e.

which is approximately equal to 1.4 times.
Hence, the answer is: approx 1.4 times.